Definitions

attest

[uh-test] / əˈtɛst /

VERB

affirm, vouch for

Synonyms

STRONGEST

authenticate corroborate demonstrate indicate substantiate swear verify

STRONG

adjure announce argue assert aver certify confirm countersign declare display exhibit prove ratify seal show support sustain testify uphold warrant witness

WEAK

asseverate bear out bear witness give evidence

Antonyms

STRONGEST

conceal disprove hide

STRONG

abstain contradict cover deny disavow discredit invalidate oppose refuse reject repudiate veto withhold

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Canada and Australia who said they’re not OK with AI in ads, according to a January poll from research company Attest.

From The Wall Street Journal • Nov. 3, 2025

Attest CEO Jeremy King blamed inflation for freezing consumer spending plans this year.

From Washington Times • Nov. 15, 2023

Attest also found that 85.5% of panel participants preferred to cook at home and 53% said they got takeout food from restaurants and delivery apps at least once a month.

From Washington Times • Sep. 13, 2023

“Inflation’s impact is hard to ignore from our research,” said Attest CEO Jeremy King.

From Washington Times • Nov. 21, 2022

Attest it these tears when in memory I speer thee, * And unchecked down my cheeks pours the flood without measure.

From The Book of the Thousand Nights and a Night — Volume 12 [Supplement] by Burton, Richard Francis, Sir

Vocabulary lists containing attest

100 SAT Words Beginning with "A"

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Posted

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The Ancient Period, Before 600 BCE

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